To Read the Hemolytic Reaction Accurately on a Blood Agar

To read the hemolytic reaction accurately on a blood agar plate,the technologist must:

A) hold the plate up to the light,and observe the plate with the light coming from behind.
B) hold the plate under the light,and observe the plate with the light coming from the top.
C) hold the plate over a white background.
D) examine the plate using reflected and transmitted light.